<html>
<head>
<meta content="form-action 'self';" http-equiv=Content-Security-Policy>
</head>
<body>
<iframe id="i" name="i"></iframe>
<form action="about:blank" target="i"></form>
<script>
if (window.testRunner)
  testRunner.dumpAsText();

document.forms[0].submit();
document.body.appendChild(document.head);
new Document().prepend(document.body);
document.documentElement.appendChild(document.createTextNode("PASS if no crash"));
</script></html>
